Layer-by-layer replay
Play, pause, adjustable speed or target duration, a timeline graduated in layers. The G-code pane follows the nozzle line by line.
Native application for macOS
G‑CodeExplorer
See your print
before you start it.
Open a G-code file and watch the part build up before your eyes, layer after layer, line after line. G-CodeExplorer flags risks before you print, compares two slicings and exports a time-lapse of your part. Everything happens on your Mac.
Download for Mac
macOS 26+ · Mac with Apple silicon · Five languages
Version 1.0 · 2.6 MB · macOS 26 or later, Mac with Apple silicon
Signed with a Developer ID and notarized by Apple
01
The whole print,
Features
The whole print,
before the first layer.
Colors and cutaway
Color the part by filament, movement, speed, layer, tool or risk, and cut it open to see inside, with a slider in millimeters.
Risks, before you print
Overhangs, bridges, islands, thin walls, flow, first layer, layer time, seam: a score out of 100 and a one-page PDF report.
A video of your print
MP4 time-lapse (H.264 or HEVC) or animated GIF, in 9:16, square or 16:9, with a camera orbit. Or a PNG share card.
Compare two slicings
Two files side by side: time, material, cost, score and risks, to pick the right settings before printing.
Pause or filament change
Insert a pause or a filament change before a layer: a new file is written, the original is never changed.
In the workshop
Live, read-only follow of a Moonraker or PrusaLink printer. After a failure, the post-mortem finds the layer to blame; the workshop journal keeps score.
All your slicers
G-code from PrusaSlicer, OrcaSlicer, Bambu Studio, Cura and Simplify3D, .gcode.3mf archives, 3MF projects, and STL as a simulated preview.
Built for macOS
Quick Look preview in the Finder, Siri and Shortcuts actions, full menus and keyboard shortcuts, VoiceOver.
02
The part builds up,
Preview
The part builds up,
before your eyes.
Three Mac screens, in this page’s language.
The G-code pane follows the nozzle line by line; the timeline counts layers and time.
The part colored by speed, the score out of 100 and the risks found, each at its layer.
Slicer, estimated time, filament, dimensions and cost, together in the inspector.
03
By voice,
Siri, Spotlight & Shortcuts
By voice,
or in a shortcut.
2 Siri commands and 2 actions in the Shortcuts app, on Mac.
Siri commands
Summarize a Print
- “Summarize a print with G-CodeExplorer”
- “How much filament with G-CodeExplorer”
Share card
- “Create a share card with G-CodeExplorer”
Actions in the Shortcuts app
- 01Summarize a PrintReads a G-code or STL file and returns its duration, filament and dimensions.
- 02Create a Share CardProduces an image of the print with its numbers, ready to share.
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Your files
Privacy
Your files
stay yours.
No account, no trackers, no data collected. G-CodeExplorer reads your files on your Mac and sends nothing, neither to the developer nor to anyone else.
Read-only
The open file is read, never written. Exports and inserted pauses produce new files, wherever you choose.
All on your Mac
Risk analysis, video rendering and the workshop journal stay on this Mac.
Local network only
The app only connects to the printers you add, read-only, and never sends them a command.
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Support
A question or need help?
Supported formats, risk analysis, live follow: the support page covers the essentials, and we read every message.
View support →